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So I assume this means a lot less power from the A30 Pro ?
According to the spec sheet, A30pro has 6W (16ohm load) output when 2.7Vrms signal (XLR or RCA) is input.
According to the spec sheet, A30pro has 6W (16ohm load) output when 2.7Vrms signal (XLR or RCA) is input.
A30pro should not rattle. I would contact the seller and request a free replacement A30Pro.Hello All, new user here.
I just received the A30/D30 pro stack and during checking I noticed a rattling sound coming from the A30 when shaken.
Is this sound normal or might there be something loose inside?
The D30 is completely silent.
Ive recorded a short video with the rattling sound.
https://www109.zippyshare.com/v/l23U6oLz/file.html
I will appreciate anyone's help.
I'm sorry. I wasn't doing the calculations.Thanks, I am not an engineer, just an enthusiast. But it seems to me 6W is going to be all I ever need, this stack is my end game. I will focus on headphones from now on, I actually have a pair of Aeon RT on the way!
So is this not a true balanced output?
The A30 Pro doesn't have a balanced internal design, but it does support the things people actually buy balanced amplifiers for.
It supports balanced input from a DAC, and it has balanced headphone connector types with output power levels that are similar to those from a true balanced amplifier. The A30 Pro would still offer the advantages of using a balanced headphone output for extremely long cable runs to your headphones, for example.
The Topping A90 for example, has a balanced design throughout, and offers similar output power from its XLR and 4.4mm "balanced" outputs, but less power than the A30 Pro when connecting via the 6.35mm single ended (SE) headphone output.
Are there any advantages of spending more money for a balanced cable vs. single ended with the A30 Pro?
You may get a little more power out of the XLR output compared to the 6.35mm (1/4 inch) output.
The measurements in the review show 0.73w (SE) vs 0.81w (XLR) at 300 ohms.
Topping A30Pro Review (Balanced Headphone Amp)
This is a review and detailed measurements of the Topping A30Pro balanced input and output headphone amplifier and pre-amp. It was kindly sent to me by the company. I am sorry but I don't have release date or pricing. I usually only get finished products from Topping so expect release date to...www.audiosciencereview.com
I'm waiting on an XLR cable for my headphones, not for the extra power, but because the XLR connector is further away from the volume dial, which works better for my desk layout (it will run past my keyboard, instead of around it).
I highly doubt that the 0.08W is going to make a meaningful difference in any situation. I say that with regular use there is no difference between SE and balanced headphones output on the A30 Pro and certainly nothing worth spending extra cash on those fancy balanced headphones cables.You may get a little more power out of the XLR output compared to the 6.35mm (1/4 inch) output.
The measurements in the review show 0.73w (SE) vs 0.81w (XLR) at 300 ohms.
Topping A30Pro Review (Balanced Headphone Amp)
This is a review and detailed measurements of the Topping A30Pro balanced input and output headphone amplifier and pre-amp. It was kindly sent to me by the company. I am sorry but I don't have release date or pricing. I usually only get finished products from Topping so expect release date to...www.audiosciencereview.com
I'm waiting on an XLR cable for my headphones, not for the extra power, but because the XLR connector is further away from the volume dial, which works better for my desk layout (it will run past my keyboard, instead of around it).
I highly doubt that the 0.08W is going to make a meaningful difference in any situation. I say that with regular use there is no difference between SE and balanced headphones output on the A30 Pro and certainly nothing worth spending extra cash on those fancy balanced headphones cables.
The A30 Pro supports balanced where it does matter, the input.
So even if my DAC only outputs 2 Vrms from RCA I still get 6w at 16ohm from the amp?I'm sorry. I wasn't doing the calculations.
The input signal voltage required for a 6W (16ohm) output is approximately 1.96Vrms (gain=H).
2*10^(14/20)=10 so you will get 10Vrms output with 2Vrms input and gain set to +14dB.So even if my DAC only outputs 2 Vrms from RCA I still get 6w at 16ohm from the amp?
2*10^(14/20)=10 so you will get 10Vrms output with 2Vrms input and gain set to +14dB.
10Vrms^2/16Ω=6.25W